🎓 GPA Calculator
Get your weighted GPA in seconds — add your courses, enter credits and grades, and this free in-browser tool does the math for you. No account, no upload, no data ever leaves your device.
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About
Toolio's GPA Calculator computes your cumulative weighted GPA using either the 4.0 US scale or the 4.5 Korean university scale — you can switch between them at any time. It weights each course by its credit hours so elective courses don't skew your average. Because everything runs locally in your browser, your academic records stay completely private: nothing is sent to any server.
How to use
- Choose your grading scale: 4.0 (US) or 4.5 (Korean university).
- Click '+ Add course' and enter the course name (optional), credit hours, and letter grade.
- Repeat for each course — the weighted GPA updates automatically.
- Use the grade reference table at the bottom to check how each letter grade maps to grade points.
FAQ
- Is this GPA calculator free?
- Yes, completely free. No sign-up, no ads, no hidden fees — just open the page and start calculating.
- Does it work offline?
- Yes. After the page loads once, everything runs inside your browser with no internet connection required. Your data is stored only in browser localStorage.
- Is my GPA data private?
- Completely. No data is sent to any server. All calculations happen locally in your browser, so your academic records never leave your device.
- What is the difference between the 4.0 and 4.5 grading scale?
- The 4.0 scale (common in US universities) caps at 4.0, where A and A+ both equal 4.0. The 4.5 scale (used by most Korean universities) gives A+ a value of 4.5, allowing finer differentiation at the top. This calculator supports both — just switch the scale selector.
- Can I calculate GPA for multiple semesters?
- Yes. Simply add all courses from all semesters into the list — the calculator produces a single cumulative weighted GPA across all entries. Your course list is saved in the browser so it persists between visits.